FIX: adds item to outpus for autorecon1

Author: David Ellis

nipype/workflows/smri/freesurfer/autorecon1.py

@@ -444,7 +444,7 @@ def awkfile(in_file, log_file):
                'braintemplate']
 
     if fsvernum < 6:
-        outputspec = pe.Node(IdentityInterface(fields=outputs + 'nu'),
+        outputspec = pe.Node(IdentityInterface(fields=outputs + ['nu']),
                              name="outputspec")
         ar1_wf.connect([(add_to_header_nu, outputspec, [('out_file', 'nu')])])
     else: